How to approve the document

After receiving an electronic contract, what steps does the “approver” take after receiving the email?
Assumption.
The sender (the person who requests the signature) is the recipient flow.
Approver 1 -> Approver 2 -> Signer
The assumption is that the sender (the person requesting the signature) has set the recipient flow as
Does anyone have an understanding of this?
I would appreciate an illustration.

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