It's worth reading through some of the amendments. In order to see how they make changes - you will need to download a copy of the Bill (download here)
Amendments make reference to clauses - these are the main building blocks of a bill (and become "Sections" when the bill becames an Act of Parliament.
For example clause 27 is preceded by
27 Position of providers of services
On the right hand side of the page are numbers (5, 10, 15....). These are the line numbers.
So to find The following amendment -
Page 8, line 18, leave out “may” and insert “must”
Go to page 8 of the bill - and on line 18 (which is in clause 11) the word currently in the bill is "may", Lord Bach & Lord Beecham which to delete the word may (which gives a discretionary power) and replace it by "must" (an obligation)