This post describes steps one can take to turn on or off Hover Click to select or to open an item in Ubuntu Linux.
By default, it takes double clicks to open an item in File Manager in Ubuntu Linux. The double clicks feature is meant to prevent accidental open of items when opening files and folders.
For those who cannot properly use double-click can enable single-click which allows users to click once to open items. When you use single-click mode, you can hold down the CTRL key while clicking to select one or more files.
If clicking is a problem for others, they can enable Hover Click feature in Ubuntu Linux.
When Hover Click is enabled, you can move your mouse pointer over a control, let go of the mouse, and then wait for a while before the button will be clicked for you.
Below is how to do that in Ubuntu Linux.
How to turn on or off hover click in Ubuntu Linux
As mentioned above, Hover Click allows you to move your mouse pointer over a control, let go of the mouse, and then wait for a while before the button will be clicked for you.
Below is how to enable or disable in Ubuntu Linux.
Ubuntu Linux has a centralized location for majority of its settings. From system configurations to creating new users and updating, all can be done from the System Settings panel.
Alternatively, click on the System menu at the top-right corner of the top bar on your desktop.
On the System menu, select Settings as highlighted below.

In the Settings app, click on Accessibility tile to open the panel.

In the System Settings -> Accessibility panel, under Pointing & Clicking, select Click Assist tile to expand.

On the Click Assist pop-up window, toggle the Hover Click switch to the On position to enable.
To disable, toggle the switch back to the Off position.

When you hover your mouse pointer over a button and do not move it, it will gradually change color. When it has fully changed color, the button will be clicked.
Adjust the Delay setting to change how long you have to hold the mouse pointer still before clicking.
That should do it! You can now close the Settings app.
Conclusion:
This post showed you how to enable or disable Hover Click in Ubuntu Linux. If you find any error above or have something to add, please use the comment form below.