This guide will tell you how to Enable/Switch to the Steam Client BETA Version. You just have to follow the simple steps below to do so.
First of all, you will need to open Steam and click on the Steam button on the top right side of your screen. Click on settings and then select the account tab on the left side of your screen. You will find the beta participation option there, you have to make sure that you have played with beta otherwise this option will not be enabled for you. So you have to click on the change button.
After clicking on change a new small window will open. Under beta participants, you have to select the Steam Beta update option and then click on OK.
After this, you have to update your steam and then restart it. After this, you will be prompted to the beta version of steam.