Should just show announcements, sorted by date, with the most recent at top.
For authenticated users with proper permissions, a FAB can be shown. Clicking it can open a modal screen with input fields.
Clicking on the announcement could show a bottom screen that let's you select between deleting or editing the announcement. Editing the announcement can probably re-use the original modal screen, with some minor changes.
Should just show announcements, sorted by date, with the most recent at top.
For authenticated users with proper permissions, a FAB can be shown. Clicking it can open a modal screen with input fields.
Clicking on the announcement could show a bottom screen that let's you select between deleting or editing the announcement. Editing the announcement can probably re-use the original modal screen, with some minor changes.