Hello,
The RV215W is not capable of providing any DHCP options.
The RV320 on the other hand has the capability of configuring a few options like a TFTP server and such.
Here is a link to the admin guide for the RV320, page 46 talks about DHCP setup and options supported
http://www.cisco.com/c/dam/en/us/td/docs/routers/csbr/rv320/administration/guide/en/rv32x_ag_en.pdf
Below you will also find a emulator for the RV320 that will show you all the options on the device
https://www.cisco.com/assets/sol/sb/RV320_Emulators/RV320_Emulator_v1.1.0.09/default.htm
I hope this helps