I'm trying to create a check-in process to allow users to press a button to check-in. I'm new to Appian and i'm not sure how to go about this. So far what I have is a Meeting record displaying all the details about the meeting, including a user group picker field for attendees. Now what I am trying to do is configure a button that a logged in user can press so that that user can be added to the Attendees field in my meeting record
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Hi,
Create a process model and use here writetodatabase smart service to store your required data into database and then again render the user on same record page so this time you will be able to see the updated record as well.Now configure this process model in the record as related action(give it name "add me in the meeting" or whatever you wwant) so whenever user will click this, user will be added into meeting and you will be able to see refreshed dashboard.
below link can help you:
https://docs.appian.com/suite/help/18.2/Using_the_Records_Tab.html
Regards
Abhay