To get more CPU, you would need to stake some TLOS for it, so make sure you have enough balance. The flow is a bit different, depending on the device you’re using.

On mobile: 

• Open Wombat and find the URL bar in Explorer
• Paste this link there and proceed: https://eosauthority.com/wallet/unstake?network=telos
• Tap on Manage CPU/RAM 

On desktop: 

• Open https://eosauthority.com/wallet/unstake?network=telos & log in with Wombat

Choose your stake. If you think you will only make one transaction per day, 15 TLOS should be enough. If you plan to move funds a lot or work with dApps actively, consider a range between 130-390 TLOS. Using the same process, you can always unstake EOS — be advised that it will be unlocked only after 72 hours waiting period.