How to change batt. of RTC VIA VT82885N

I have a PC-CHIPS M560 mainboard (socket 7), a “technician” throw out the battery and told me that my mainboard was dead to discard.
I see that the mainboard has a VIA VT82885N chip that previously had the battery mounted on it (not a regular coin CR2032 in its cup).
The questions are:
-may I connect another new battery?
-what kind of battery?
-to which pins?
-is needed also the connection of a new crystal?
-in case to connect a new crystal I need to know also to which pins and the electronic specifications of that crystal.

Thank you in advance for your cooperation.

Best regards and Happy New Year for everybody