Zoho provides single sign on service, and so if you change the password for Zoho Recruit, it will be changed for all Zoho Services. You can change your password from Zoho Accounts. Please note that you cannot change passwords for other users.
To change password:
Click your login picture and then click My Account.
In the Zoho Accounts page, under Security tab, click the Change Password link.
In the Password page, specify your Current Password and New Password in the corresponding fields.
The new password gets updated and should be used to sign in to all Zoho Services.