designate page URL as /meetings

Good morning!

I would like to change the ending URL of our meeting list page from /?tsml-day=any&post_type=tsml_meeting to /meetings like it is at gebaca.org/meetings. I have looked in the settings and import & export and didn’t see anything that would allow me to change this. I have tried changing the Permalinks and also doing a Redirect (which ended in a 404 error) and having yet found the solution.

I would be grateful for any suggestions.

The page I need help with: [log in to see the link]