Currently we can't add pages on calc documents on the android viewer. Also we should be able to change the names of the pages we add and delete them
Assuming you mean slides to impress =)
Mert Tümer committed a patch related to this issue.
It has been pushed to "master":
[Pardus] tdf#112482 ability to add slides to impress
It will be available in 6.1.0.
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.
It's good practice to set the bug as ASSIGNED so the other people know you are working on it.
And if the bug is fixed, please set it to RESOLVED FIXED.
*** Bug 96798 has been marked as a duplicate of this bug. ***