I am new to Zoho so need a little help around lead allocation I have 6 users and need to allocate a chunk of leads to each user in bulk, is this possible on the free version? if so how?

Also, the users are currently working in 2 different campaigns, they are navigating to the leads within each campaign through the campaign header, but when they click on each lead and then go back to go onto the next it takes them back to the beginning of the list of leads. is there a way to keep them at the last lead worked on, to save time.

Thanks in advance