Mount
When you open the mount page there are 4 tabs as shown below
For more details on Advanced Mounts and parking rewards check here
Upgrade
This is the main page, here you can upgrade your main stats by upgrading your mount. To upgrade your mount you will use clock winders which can be obtained from the Chrono Tower Dungeon
Clock Winders are the best place to use Diamonds until your mount reaches level 7-1 at which point you never want to use diamonds on this again
(Remember there is a rush for the clock winders)
For every Tier you reach you will also get a boost to your evasion stat
Empower
This page is an “as you go” progression page, the bonuses in here aren’t amazing and you have no control over these so don’t worry about it too much
Advance
This is where you can view and equip your mount morphs, the “Ride” button under the visual is a cosmetic trigger, the “Use” button is the one that controls whether it is being equipped or not
In here you can also upgrade your mounts either using duplicates or Mount Stars which are obtained through Spending Events and Feather Shop
Remodel
Finally, “Remodel” this is another passive progression page, using the “Remodel Guides” you acquire through parking wars you can level up your mounts for more base stats. For this I recommend leveling your mounts equally for best value