How to setup access point with guest network

Has an old router B with guest network feature that would like to convert to an access point, whereby users can connect to the guest network from router B. Router A the main router is an Asus router and Router B is a TP link router
Followed the instructions from the below link..
Able to connect to router B normal WiFi ssid and surf web and at the same time it’s able to access internal net work resources.  when connect to the guest network, it shows no network connection.

https://www.google.com.sg/amp/s/www.cnet.com/google-amp/news/how-to-turn-an-old-wi-fi-router-into-an-access-point/

Saw another link whereby this can be achieved when router A is using the dd-wrt firmware
https://www.howtogeek.com/153827/how-to-enable-a-guest-access-point-on-your-wireless-network/

Is there ways to configure when router A is not using dd- wrt firmware and users can get connected to router B guest network?
grnowAsked:
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RartemassLife CoachCommented:
What model routers do you have?
It needs the hardware and firmware to act as an access point. A lot of routers can act as an AP if the firmware supports it.

The dd-wrt firmware does enable that on some routers that do not have the AP option from the manufacturer firmware.

The dd-wrt website has a list of compatible routers.
https://www.dd-wrt.com/wiki/index.php/Supported_Devices

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RartemassLife CoachCommented:
Without further input from asker it is difficult to assist further.
Links and information provided point in the right direction for a general resolution.
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