make provision excluding the making of a claim for incapacity benefit or severe disablement allowance on or after the appointed day;

make provision for a claim for incapacity benefit, income support or severe disablement allowance which is made on or after the appointed day to be treated in prescribed circumstances as a claim for an employment and support allowance;

make provision for a claim for an employment and support allowance to be treated wholly or partly as a claim for incapacity benefit, income support or severe disablement allowance;

make provision excluding the making of a claim for an employment and support allowance by a person who is entitled to an existing award.