upstream-zulip/web/templates/stream_settings/channel_permissions.hbs

<div id="channel-subscription-permissions" class="settings-subsection-parent">
    <div class="subsection-header">
        <h3 class="settings-subsection-title">{{t "Subscription management"}}</h3>
        {{#if is_stream_edit}}
            {{> ../settings/settings_save_discard_widget section_name="subscription-permissions" show_save_discard_buttons=true}}
        {{/if}}
    </div>

    {{#if is_stream_edit}}
        <div class="stream-permissions-warning-banner"></div>
        {{> channel_type .
          channel_privacy_widget_name="channel_privacy" }}

        <div class="default-stream">
            {{> ../settings/settings_checkbox
              prefix=prefix
              setting_name="is_default_stream"
              is_checked=check_default_stream
              label=(t "Default channel for new users")
              help_link="/help/set-default-channels-for-new-users"
              }}
        </div>
    {{/if}}

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_subscribe_group"
      label=group_setting_labels.can_subscribe_group
      prefix=prefix }}

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_add_subscribers_group"
      label=group_setting_labels.can_add_subscribers_group
      prefix=prefix }}

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_remove_subscribers_group"
      label=group_setting_labels.can_remove_subscribers_group
      prefix=prefix }}

    {{#unless is_stream_edit}}
        {{#if is_admin}}
        <div class="default-push-notifications">
            {{> ../settings/settings_checkbox
              prefix=prefix
              setting_name="default_push_notifications"
              is_checked=false
              is_disabled=disable_push_notifications
              label=(t "Mobile push notifications enabled by default")
              tooltip_message=push_notifications_tooltip
              }}
        </div>
        {{/if}}
    {{/unless}}
</div>

<div id="channel-messaging-permissions" class="settings-subsection-parent">
    <div class="subsection-header">
        <h3 class="settings-subsection-title">{{t "Messaging permissions"}}</h3>
        {{#if is_stream_edit}}
            {{> ../settings/settings_save_discard_widget section_name="messaging-permissions" show_save_discard_buttons=true}}
        {{/if}}
    </div>

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_send_message_group"
      label=group_setting_labels.can_send_message_group
      prefix=prefix
      help_link="/help/channel-posting-policy" }}

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_create_topic_group"
      label=group_setting_labels.can_create_topic_group
      prefix=prefix
      help_link="/help/configure-who-can-start-new-topics" }}

    <div class="input-group">
        <label for="{{prefix}}topics_policy" class="settings-field-label">{{> stream_topics_policy_label .}}</label>
        <select name="stream-topics-policy-setting" id="{{prefix}}topics_policy" class="prop-element settings_select bootstrap-focus-style" data-setting-widget-type="string">
            {{> ../settings/dropdown_options_widget option_values=(object_values stream_topics_policy_values)}}
        </select>
        {{> topics_already_exist_error .}}
    </div>
</div>

<div id="channel-moderation-permissions" class="settings-subsection-parent">
    <div class="subsection-header">
        <h3 class="settings-subsection-title">{{t "Moderation permissions"}}</h3>
        {{#if is_stream_edit}}
            {{> ../settings/settings_save_discard_widget section_name="moderation-permissions" show_save_discard_buttons=true}}
        {{/if}}
    </div>

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_move_messages_within_channel_group"
      label=group_setting_labels.can_move_messages_within_channel_group
      prefix=prefix }}

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_move_messages_out_of_channel_group"
      label=group_setting_labels.can_move_messages_out_of_channel_group
      prefix=prefix }}

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_resolve_topics_group"
      label=group_setting_labels.can_resolve_topics_group
      prefix=prefix }}

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_delete_any_message_group"
      label=group_setting_labels.can_delete_any_message_group
      prefix=prefix }}

    {{> ../settings/group_setting_value_pill_input
      setting_name="can_delete_own_message_group"
      label=group_setting_labels.can_delete_own_message_group
      prefix=prefix }}
</div>

<div id="channel-administrative-permissions" class="settings-subsection-parent">
    <div class="subsection-header">
        <h3 class="settings-subsection-title">{{t "Administrative permissions"}}</h3>
        {{#if is_stream_edit}}
            {{> ../settings/settings_save_discard_widget section_name="administrative-permissions" show_save_discard_buttons=true}}
        {{/if}}
    </div>
    <div class="admin-permissions-tip">
        {{t 'Organization administrators can automatically administer all channels.'}}
    </div>
    {{> ../settings/group_setting_value_pill_input
      setting_name="can_administer_channel_group"
      label=group_setting_labels.can_administer_channel_group
      prefix=prefix }}

    {{#if (or is_owner is_stream_edit)}}
        <div>
            <div class="input-group message-retention-setting-group time-limit-setting">
                <label class="dropdown-title settings-field-label" for="{{prefix}}message_retention_days">{{t "Message retention period" }}
                    {{> ../help_link_widget link="/help/message-retention-policy" }}
                </label>

                {{> ../settings/upgrade_tip_widget .}}

                <select name="stream_message_retention_setting"
                  class="stream_message_retention_setting prop-element settings_select bootstrap-focus-style"
                  id="{{prefix}}message_retention_days"
                  data-setting-widget-type="message-retention-setting">
                    <option value="realm_default">{{t "Organization default {org_level_message_retention_setting}" }}</option>
                    <option value="unlimited">{{t 'Retain forever' }}</option>
                    <option value="custom_period">{{t 'Custom' }}</option>
                </select>

                <div class="dependent-settings-block stream-message-retention-days-input">
                    <label class="inline-block" for="{{prefix}}stream_message_retention_custom_input">
                        {{t 'Retention period (days)' }}:
                    </label>
                    <input type="text" autocomplete="off"
                      name="stream-message-retention-days"
                      class="stream-message-retention-days message-retention-setting-custom-input time-limit-custom-input"
                      id="{{prefix}}stream_message_retention_custom_input" />
                </div>
            </div>
        </div>
    {{/if}}
</div>