These guides should help you get setup and ready to interact with your DAO on networks other than Ethereum mainnet. Typically all you need to do is setup Metamask for a network and know where to bridge tokens. Everything else acts the same as Mainnet, except transactions are a substantially less expensive and faster, allowing for wider participation.
First, go to your Metamask wallet and click on the networks tab and go to "Custom RPC". From here you will want to go through the following 👇
In-depth Guide -> https://www.xdaichain.com/for-users/wallets/metamask/metamask-setup
xDAI <-> DAI -> http://bridge.xdaichain.com/
Once you are on the xDai bridge site, you will see the amount of Dai you have on Ethereum Mainnet as well as the amount of xDAi that you have available on xDai Chain. (You can easily navigate between xDai side chain and Ethereum Mainnet if you click on the networks tab your Metamask Wallet)
In order to swap your Mainnet Dai for xDai, you need to be connected to Ethereum Mainnet. If you want to swap your xDai for Dai, you need to be connected to xDai Side chain.
... And just like that, you have your xDai on xDai Side Chain
All other tokens -> https://omni.xdaichain.com/
In-depth Guide -> https://docs.matic.network/docs/develop/metamask/config-matic
All tokens -> https://wallet.matic.network/bridge