While holding down the Shift key, click two plot markers. - The second plot marker will become the owner of the plot line.

Remove a plot marker

While holding down the Alt key, click a plot marker. - The plot marker will be removed along with any plot lines it owns.

Plot 1

Plot 2

Click a plot icon:

to set the plot marker coluor you want to use

Set a plot line:

Remove only  plot lines

While holding down the Alt & the Shift  keys, click a plot marker. - The plot lines owned by the plot marker  will be removed.

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