You can customize a preset Marker variant by using various brush controls, such as General controls or Size controls. In addition, you can change the look of Markers more precisely by using the Hard Media controls that are specifically designed for modifying drawing media, such as markers and pencils. For more information about the Hard Media options, see Hard Media. For more information about customizing brushes, see Adjusting brushes with brush controls.
You can also save your customized Marker variant. For more information, see Saving and deleting brush variants.