Share invitation

The button to send the email invitation dissapear when the users list is too large.
How can i personnalize the page to got a scroll on users list ?
Thanks for help!

could you tell me which Pydio version are you on, also the issue appeared on which browser, resolution?

We install PYDIO 8.2.1 community and we test on all browser we have (IE11, FireFox60.2.0esr and CHROME 72.0).
We try many different resolutions without find a solution. My actual resolution is 1920x1080.!
We can see on this capture my problem :
Thanks for your reply.