Hello @deepak_elango,
I hope you're doing well. So if you right click on a component you'll see a command called package that will allow you to switch to another footprint specified for the component without having to go into the library.
If you want to use a completely different footprint or make a mod to the footprint you'll have to change the footprint in the library.
Let me know if there's anything else I can do for you.
Best Regards,

Jorge Garcia
Product Support Specialist for Fusion 360 and EAGLE
Kudos are much appreciated if the information I have shared is helpful to you and/or others.
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