how to add WP foro navigation menu in other page on the primary menu?  

Hi @mtariq,

Please explain what have you tried?

You can add wpForo menu items one by one in any menu using "Custom Link" menu type and inserting wpForo menu shortcodes:

Each menu item has its own specific shortcode-url:

• Forum Home: /%wpforo-home%/
• Members: /%wpforo-members%/
• Recent Posts: /%wpforo-recent%/
• Unread Posts: /%wpforo-unread%/
• Tags: /%wpforo-tags%/
• My Profile: /%wpforo-profile-home%/
• Activity: /%wpforo-profile-activity%/
• Account: /%wpforo-profile-account%/
• Subscriptions: /%wpforo-profile-subscriptions%/
• Register: /%wpforo-register%/
• Login: /%wpforo-login%/
• Logout: /%wpforo-logout%/

Or you can fully insert wpForo menu in the primary location. Navigate to Dashboard > Appearance > Menu admin page and select the "wpForo Navigation" in the drop-down menu and enable it for any location you want

And please read the documentation: https://wpforo.com/docs/root/getting-started/forum-menu/

I tried it same like above but other categories of primary menu became invisible and only WP foro menu start showing on this menu. I have added a page on the primary menu by name forum and I want to add this wp foro navigation on this page. Mean I totally want to show this on that page which is on the primary menu not on the home page.