Yes, you can allocate voting weights or counts to each voter.  For example Kim can cast a vote worth 5 votes, while Sue can only cast a vote worth 1. While multipe votes can be assigned to any one voter, the VOTER MAY NOT SPLIT THEIR VOTE regardless of the value.  The voter completes only 1 ballot and weight is applied by the systemYou can alter a voter's voting weight on the Edit Voter screen or the Add Voter screen. Access these screens via the side navigation VOTER > BROWSE, or VOTER > ADD.

 

If you don't see the option to change the voting weight, please go to Ballot > Settings. On the settings screen, you can change the Weighting Rule to “Assign Weight to each individual voter"