Refer to this article if your version is below 7.4.1

A password is a security mechanism that consists of a passphrase created using Alphabetic, Numeric, Alphanumeric, Symbolic characters, or a combination of two or more of the said formats. It is used to restrict access to a System, Application, or Service to those who are authorized to use it. To prevent unauthorized access OrangeHRM is coded to provide system-guided instructions on creating a secure password.

Login to OrangeHRM using your Admin credentials and go to HR Administration > Users

Change the Password of the User

Step 1 - From the list of Users in the system, find the User Account in which you want to change the password.

Step 2 - Once you find the user, click on the pencil icon  next to it, and a pop up will appear.

Step 3 - On this pop-up window, select the checkbox before 'Change Password' as shown below.

Step 4 - Proceed to enter the new password in the fields 'Password*' and 'Confirm Password*'. Please make sure that these new passwords adhere to OrangeHRM's Password Policy. Once you're done, click on the 'SAVE' button to proceed with the password change.

Step 5 - The User can then proceed to use this newly changed password to log in. It is highly recommended to change the password upon logging in.

Change the Password as the User 

Step 1 - Click on the configuration icon by hovering the mouse pointer to your profile picture. From there, select "Change Password". 

Step 2 - Fill in the following details and click "Save".

Step 4 – Complete the following fields on the above screen.

Step 5–  Click 'SAVE' after completing these fields.  Upon clicking 'SAVE'  the new password is created.

Refer to the following : 

Resetting the Password

Password Expiration

OrangeHRM Standard Password Policy