Displaying actions of action bar in two different rows

We can use two Action Bars and filter the actions so that the actions are distributed between two rows. We can try filtering actions in two different action bars.

There doesn't seem to be an option to update the font attributes from the property of the action bar but we can use CSS to apply custom font on the action buttons. Refer to the below documentation Uploading CSS and Uploading Custom Fonts for details on applying CSS.