The original URL Formula seems to be working on its own, and I have that box checked off, though it doesn't not seem to be working
[Add Activity Formula] = URLRoot() & "db/" & [_DBID_ACTIVITY_LOG] & "?a=API_GenAddRecordForm&_fid_11=" & "Tasked to Team Member: " & URLEncode ([Description]) & "&_fid_50=" &URLEncode([Company Name (ref)]) & "&_fid_47=" &URLEncode([Worker or Project Name (ref)])
And I'm using:
"<a class='Vibrant Success' href='javascript:LinkAway(\""&[Add Activity Formula]&"\");'>Save Task and Add Activity</a>".
I'm getting asked I wanted to leave the page and it's not saving, and it does still redirect me to the correct form, though no information is passed.
EDIT:
My mistake, I forgot to enable HTML tags, this did the trick, thank you guys!