Manage each object type separately. Only objects you can change are shown; other memberships are preserved. In a list, hold Ctrl (Command on macOS) to select multiple entries.
{{ form.members.errors }}{{ form.members }}
Metadata
{% render_field form.comments %}{% render_field form.tags %}
{% if form.custom_fields %}{% render_custom_fields form %}{% endif %}
{% if form.changelog_message %}{% render_field form.changelog_message %}{% endif %}