If you would like your rewards proxy to send rewards to your voters then you must vote in the BPs that have registered to your proxy. To check which BPs have registered for your proxy visit the Dashboard tab and click on Proxy Dashboard
From here select your proxy account and it will take you to a list of BPs that are registered for your proxy.
From this page you can directly vote for your selected BPs. Please ensure that the BPs selected have sufficient funds in their account otherwise the cannot send funds to your voters. The donation amount is the amount of daily EOS they will send on top of the rewards percentage.
You will need to monitor that the BPs you have selected do not run out of funds. If they do, you will need to unvote them and tell them to top up funds if they wish to be voted back in. You can subscribe to our telegram group which will give you a notification each day of the BPs that sent funds, please check this against your vote list and remove any BP that have not sent funds.